Headphone



FIG. 1 is a perspective view of a headphone showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is an opposite side elevational view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of another embodiment of the headphone, illustrating a mirror image of the headphone of FIGS. 1-7;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a side elevational view thereof;

FIG. 12 is an opposite side elevational view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines illustrate portions of the headphone that form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 